Aluminum oxide media
I also found on McMaster they sell it pretty cheap, but I don’t know what size. Any recommendations on size/mesh?
Thanks for the help. I’m building a tumbler and before I start just want to know how to get my hands on media.
Aluminum Oxide Grit
In 2001, I paid $0.70 per lb for #6 aluminum oxide media (chips) from an abrasives supplier in Massachusetts. (50-lb bag). No shipping was needed, so it was a great deal.
That was US #6 MESH size, meaning the material was screened with a mesh with 6 openings per linear inch, yielding nothing bigger than about 0.130" average cross-section, random-shaped chips. It is considered "coarse" media.
Here's a particle size chart that might be helpful:
I've just Googled, but couldn't find any suppliers of aluminum oxide chips of #6 mesh size. My internet search in 2001 was also difficult and I didn't find this media until phone contacts led to a distributor.
You're close to industrial areas and I'm sure someone will point you to a supplier.
By the way, I'd recommend getting 50 pounds of media. I put almost all of that amount into a steel HP120 to reach a little more than half-full, which seems to tumble the ends well.